FrostDateCheck

Cairo, WV 26161 Frost Dates

26161, near Cairo, WV: the frost window

Zone 6b

Around 04/26 is the usual last spring frost, about 241 days away. Fall's first freeze usually shows up around 10/17, roughly 173 days after the last spring frost.

The USDA Plant Hardiness Zone Map puts Cairo in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.

Stretching the season past the first frost

Cairo's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.

Why 04/26 isn't a guarantee

04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.

Cairo against the rest of the dataset

Cairo's growing season runs about 173 days, ranking 28,094 of 40,283 US ZIP codes measured here, longest to shortest. Within WV, it ranks 663 of 885.

Learn more

Two guides worth reading on 26161: the frost range, on how to read the range around Cairo's dates instead of trusting one, and local microclimates, on what one yard in Cairo can differ from the 26161 normal.